148results about How to "Rich microporous structure" patented technology

The invention relates to a controlled/slow release polycarboxylate water reducing agent for inhabiting the aggregate mud content influence, which is characterized in that the controlled/slow release polycarboxylate water reducing agent comprises the following ingredients by weight parts: 75 to 95 parts of polycarboxylate water reducing agents, 2 to 5 parts of retarders and 5 to 25 parts of slow release agents. Because natural zeolite powder has the characteristics of microporous structure, large specific surface area and strong surface absorption capability, the natural zeolite powder can be used as the slow release agents. The invention utilizes the natural zeolite powder as the slow release agents, and the surface of the natural zeolite powder can absorb a large number of polycarboxylate water reducing agents and a small number of retarders after the natural zeolite powder is mixed with the polycarboxylate water reducing agents and the retarder. Clay can preferentially absorb the natural zeolite powder with strong surface absorption capability when the natural zeolite powder is doped into concrete to be stirred with gelled materials, aggregates and water, and the excessive absorption of the polycarboxylate water reducing agent by the clay is avoided, so the absorption of the polycarboxylate water reducing agents on cement grains and the dispersing effect taking are ensured.

The invention relates to the technical field of nonmetallic mineral finish machining and inorganic processing, in particular to an attapulgite/graphite phase carbon nitride composite material. The attapulgite/graphite phase carbon nitride composite material takes attapulgite as a carrier and takes graphite phase carbon nitride as an active ingredient; the mass ratio of the attapulgite to the graphite phase carbon nitride is 1: 1 to 1: 10. By compounding the graphite phase carbon nitride with the attapulgite, the foreign ions in the attapulgite enter the crystal lattices of the graphite phase carbon nitride to increase the defects and change the energy level; the silicon oxide in the attapulgite can possibly form a heterojunction structure with the graphite phase carbon nitride so as to promote the transfer of photo-generated electrons and avoid the self-compounding of the photo-generated electrons; through the concerted catalysis action between the carrier and the active ingredient, the catalytic activity of the composite material is strengthened to a great extent.

The invention provides a preparation method of N-P-codoping porous biomass carbon catalyst. Cheap and easy-to-get biomass chitosan is taken as carbon source and nitrogen source (as nitrogen-containing ligand at the same time), organic phosphorus compound triphenylphosphine is taken as phosphorus-containing ligand, the nitrogen-containing ligand and the phosphorus-containing ligand form a coordination compound together with metal ions in metallic salt solution, ZnCl2 is taken as activating agent, the coordination compound is subjected to high-temperature pyrolysis in a nitrogen atmosphere to form holes, and finally diluted hydrochloric acid is used to remove metals for secondary hole formation, so as to prepare the N-P-codoping porous biomass carbon catalyst with rich micropores and a mesopores structure as well as a high specific surface area. The N-P-codoping porous biomass carbon catalyst is comparable to commercial Pt/C (20%) in catalytic performance in an alkaline environment, has good methanol poisoning resistance and stability, and can regulate components and performance of catalyst in molecular level. The N-P-codoping porous biomass carbon catalyst disclosed by the invention is expected to replace cathode oxygen reduction catalyst of the commercial Pt/C, and has a very good industrial application prospect.

The invention relates to a preparation method of a porous carbon fiber with a high specific surface area. The preparation method comprises the following steps: subjecting a spinning liquid containing polyacrylonitrile, a pore forming agent, and N,N-dimethyl formamide to electrostatic spinning, then carrying out carbonization, and finally performing hot alkali washing and drying to obtain the porous carbon fiber with a high specific surface area. According to the preparation method, nano silica is taken as the pore forming agent, then silica in fibers is removed by hot alkali, and the prepared porous carbon fiber has a high specific surface and is rich in micro pores and mesopores.

The invention discloses a method for preparing bamboo shoot shell-based activated carbon for a super capacitor. The method comprises the following steps of firstly carrying out pretreatment processes such as washing and drying on raw material bamboo shoot shells; then carbonizing the bamboo shoot shells at high temperature, treating by acid to remove trace metal elements, washing by using distilled water and drying; finally, activating, washing and drying to obtain bamboo shoot shell-based activated carbon. The bamboo shoot shell-based activated carbon is tubular in microstructure, the micropore structure is developed, the specific surface area is as high as 3162m<2>/g, and the specific capacitance is as high as 308Fg<-1> when the electric current density is 1Ag<-1>; when the electric current density is 2Ag<-1>, the specific capacitance has no attenuation basically and is as high as 271Fg<-1> after 10000 times of circulation, and thus the cycle performance is excellent, so that the bamboo shoot shell-based activated carbon has good application prospects in the fields of super capacitors and energy storage. In addition, according to the invention, the bamboo shoot shells are taken as raw materials, so that the comprehensive utilization of the wastes is realized.

The invention belongs to the technical field of heterogeneous catalysis and particularly discloses a copper-based MOF carbonization derived catalytic material and a preparation method and applicationthereof in the field of unsaturated hydrocarbon selective hydrogenation. The copper-based MOF carbonization derived catalytic material and the preparation method have the advantages that by controlling pyrolysis conditions and using organic ligands as the self-sacrificial template to reduce copper ions in an in-situ manner, the metal active center of the prepared catalytic material is highly dispersed, the specific surface area of the catalytic material is larger than that of a traditional supported catalyst, and the catalytic material has rich mesoporous and micropore structures and can provide a sufficient place for hydrogenation reaction; nanoscale, sub-nanometer even atomic-scale metal particles in the structure of the catalytic material have extremely high surface energy, so that theactivity and selectivity of the catalytic material are much better than those of common metal catalysts and even can be on a par with those of precious-metal catalysts; the catalytic material is suitable for activity the carbon-carbon double bonds or triple bonds of unsaturated hydrocarbon and can adsorb free hydrogen to perform selective hydrogenation reaction and the like; the catalytic materialis low in synthesizing cost and can provide a brand new thought for an existing catalytic hydrogenation process.

The invention discloses a three dimensional graphene/hollow carbon sphere/sulfur composite material, a preparation method thereof, and an application in lithium-sulfur batteries. The three dimensional graphene/hollow carbon sphere/sulfur composite material comprises nanometer elemental sulfur and a three dimensional graphene-hollow carbon sphere nano-compound, and the nanometer elemental sulfur is distributed in the three dimensional graphene-hollow carbon sphere nano-compound. The preparation method comprises the following steps: dispersing the three dimensional graphene-hollow carbon sphere nano-compound in an alcohol and water mixed solvent to obtain a suspension; and adding an aqueous solution of Na2S.9H2O and Na2SO3 into the suspension, adding an acidic solution, and reacting to obtain the three dimensional graphene/hollow carbon sphere/sulfur composite material. The composite material has the advantages of high specific capacity, stable cycle performances, and excellent rate performance and coulombic efficiency, the preparation method has the advantages of simplicity, convenience and good effect, and the composite material can be applied in the preparation of lithium-sulfur battery positive electrode materials.

The invention relates to a preparation method of a ZSM-5 molecular sieve with a multi-level pore channel structure. The preparation method comprises the following steps of: performing activating treatment on natural layered clay by virtue of a high-temperature roasting mode; adding the activated natural layered clay into an acidic solution and performing acid treatment to obtain a mixture; adding water glass, a template agent and water sequentially into the mixture, so that the constitution of the mixture accords with the condition that the molar ratio of Na2O:Al2O3:SiO2:H2O is equal to (3-11):1:(20-100):(500-1500); adjusting the pH value of the mixture to 9-12 to obtain reactant gel; performing ageing treatment on the reactant gel; performing hydrothermal crystallization treatment on the aged reactant gel to obtain the ZSM-5 molecular sieve with the multi-level pore channel structure. By utilizing the method, the ZSM-5 molecular sieve with the multi-level pore channel structure is synthesized by taking the natural layered clay which is roasted at a high temperature as a unique aluminum source, taking the water glass as a supplemented silicon source and adopting the single template agent. The method has the advantages of simplicity and low cost.

The invention relates to a compound polynary micro-electrolysis filler applied in the field of industrial polluted wastewater treatment, and a preparation method thereof. The filler is prepared from, by weight, 40-55 parts of active carbon powder, 20-40 parts of iron powder, 10-20 parts of aluminum powder, 1-3 parts of rhodium powder or ruthenium powder, 15-20 parts of clay and a proper amount of an additive. The preparation method of the filler comprises the following steps: mixing the active carbon powder, the iron powder, the aluminum powder, the rhodium powder or the ruthenium powder, and the clay in proportion, preparing spherical particles, and roasting at a high temperature to obtain the filler. The particle size of the compound polynary micro-electrolysis filler prepared in the invention is 5-10mm. The compound polynary micro-electrolysis filler has the advantages of large specific surface area, high amount of porosity, no passivation, no hardening, reduction of the chemical oxygen demand (COD) and the chroma of wastewater in a short time, and improvement of the biodegradability of the wastewater, has an especially substantial chroma removal effect on the wastewater, and can efficiently treat high-chroma wastewater, such as printing and dyeing wastewater and pharmacy wastewater.

The invention discloses a lithium ion battery anode material with a porous structure and a preparation method of the lithium ion battery anode material. The raw material is spherical flake graphite and a coating precursor. The preparation method is characterized by comprising the following steps: by the pore-forming action of pore-forming agents, such as silicon oxide, calcium oxide, magnesium oxide, ferroferric oxide, copper oxide and molybdenum oxide, naturally existing in the spherical flake graphite in a high-temperature treatment process, preparing high-purity spherical graphite with a certain pore structure; and carrying out surface coating with resin materials such as asphalt, emulsified asphalt, phenolic resin, furfural resin and epoxy resin, and carrying out carbonization, crushing and screening to obtain the final anode material. Compared with a traditional technology, the anode material prepared by the method has the advantages of high capacity, good cycling stability and the like; the raw materials used by the technology are abundant; the preparation technology is simple; and the lithium ion battery anode material is suitable for large-scale production and has great commercial value.

The invention belongs to the technical field of energy conversion and storage materials, provides a recyclable preparation method of a microporous iron-nitrogen-doped carbon catalyst material and particularly relates to a method for a nitrogen-containing polymer precursor which is formed through liquid phase in situ recyclable preparation and adsorbed by iron ions. The yield of the nitrogen-containing polymer is up to 98%, Feions/N-Polymer obtained through solid-liquid separation does not need to be washed, the Feions/N-Polymer is directly encapsulated by molten salt and microporous-annealed to obtain an iron-nitrogen-doped carbon material with electrocatalytic oxygen reduction performance superior to commercial Pt/C catalysts, the filtrate after solid-liquid separation contains very little unpolymerized monomers, after divalent iron ions in the filtrate can be oxidized again through the hydrogen peroxide to obtain ferric ions, recyclable preparation of the Feions/N-Polymer is performed, no waste liquid is discharged, and the recyclably prepared iron-nitrogen-doped carbon material has electrocatalytic oxygen reduction catalytic performance comparable to that of a firstly-synthesized iron-nitrogen-doped carbon material. The method has advantages of mild experiment condition, simple method, good repeatability, economic property and environmental protection.

The invention relates to a preparation method of a pillow filled with composite particles of tea, carbon and Chinese herbs. Tea, carbon and Chinese herbs are ground into powder and then are added with adhesives to be prepared into the particles with required shapes, after that, the composite particles of tea, carbon and Chinese herbs are matched with cotton to be filled into a pillowslip as pillow stuffing. The pillow filled with the composite particles of tea, carbon and Chinese herbs provide by the invention has the advantages of ventilation, permeability and being antibacterial, etc. The head can be directly contacted with the composite particles of tea, carbon and Chinese herbs. The invention not only has the efficacy of the composite particles of tea, carbon and Chinese herbs, but also can produce a concave part in the pillow in order to be inosculated with different head types, so as to generate comfort and improve sleeping quality; furthermore, the invention can also release far infrared, which has remarkable curative effect to cervical cervical spondylosis.

The invention discloses a preparation method of a microorganism active tobacco seedling growing base material. The preparation method comprises the following steps: activating EM bacteria; preparing a tobacco seedling growing base material activating agent; and fermenting and preparing the microorganism active tobacco seedling growing base material which is directly used for floating type seedling growing. By sufficiently expressing material properties of a microorganism bacterial agent (EM bacteria) (capable of optimizing base material properties, promoting rooting and reducing diseases and insect pests), organic materials (capable of improving nutritional requirements of tobacco seedlings and promoting expanding propagation of microorganisms) and biomass carbon (with abundant micro-pore structures, large specific surface area, high pH and strong adsorption capability and anti-decomposition capability); the three materials above are organically fused with peat, vermiculite, perlite and the like by utilizing a fermentation engineering technology to prepare the seedling growing base material which has the characteristics of high microbiological activity, capability of continuously and effectively supplying fertility, and good physicochemical environment for development of tobacco seedlings; the seedling growing base material is successfully used for the floating type seedling growing of tobaccos.

The invention relates to a metal-modified 13X molecular sieve desulphurization adsorbent and its preparation method and use. The preparation method comprises preparing a metal salt solution as an active ingredient ion exchange salt solution for next use, taking a 13X molecular sieve, adding the 13X molecular sieve into the ion exchange salt solution for ion exchange reaction, carrying out filtration, washing the filter residues, carrying out drying, putting the dried filter residues into a tube furnace, carrying out roasting activation, and carrying out furnace cooling to obtain the molecular sieve desulphurization adsorbent subjected to metal ion exchange. The molecular sieve desulphurization adsorbent can be used for ultra-deep removal of sulfocompounds such as thiophene and its derivatives in gasoline and diesel oil. The metal-modified 13X molecular sieve desulphurization adsorbent has a large specific surface area and a rich micropore structure, can effectively remove a trace amount of sulfocompounds in gasoline, has the advantages of low cost, simple preparation processes, high removal depth and regeneration convenience, can be used for deep removal of sulfocompounds in fuel oil products and preparation of ultral-low sulphur clean fuel oil, reduces oil product combustion sulfide discharge-caused environmental pollution and improves environment quality.

The invention discloses a kieselguhr template carbon with large specific surface area and high pore volume, and a preparation method of the kieselguhr template carbon. The method comprises the following steps in sequence: carbonizing kieselguhr to obtain a kieselguhr-carbon complex with the template contained; transferring the kieselguhr-carbon complex with the template contained into the atmosphere of steam or carbon dioxide; heating to 700 to 900 DEG C; fully roasting for 1 to 3 hours; crushing to obtain the activated solid; removing the template from the activated solid; and washing and drying to obtain the kieselguhr template carbon with large specific surface area and high pore volume. The kieselguhr template carbon with large specific surface area and high pore volume, prepared by the preparation method disclosed by the invention, is outstanding in properties and methylene blue adsorption capacity, can be widely applied to the fields such as the adsorption field, the separation field, the load field and the capacitor preparation field, and is wide in the application prospect. The method has the advantages of being low in cost, simple in process, high in efficiency, less in pollution, and low in energy consumption.

The invention provides an activated carbon fiber composite material which is prepared from activated carbon fiber, staple fiber, powdered activated carbon, modified cellulose, processing aids and the like. As an adsorbing material of an efficient activated carbon filter element, the activated carbon fiber composite material overcomes the problems of poor intensity and easy slipping of lint of an activated carbon fiber felt, reserves the rich and uniform micro-pore structure of the activated carbon fiber and has all meso-pores of high-quality powdered and granular activated carbon, so that the activated carbon fiber composite material has large adsorption capacity and has a wide range of application for adsorbing organic matters. Moreover, the filter element prepared from the material is resistant to high temperature as well as acid and alkali and can be widely applied to electroplating production lines of the PCB (Printed Circuit Board) industry.

An adsorptive separation method for removing ethylene and CO2 from the gas mixture features that in a pressure-varying adsorption system composed of at least two adsorption beds filled by adsorbent chosen from activated carbon, aluminium oxide, silica gel and molecular sieve, easy cycle of adsorption bed includes sequentially such steps as adsorption and at least one lowering of pressure, reversely releasing pressure, vacuumizing or flushing, or at least one increasing of pressure.

The invention discloses a preparation method of a hierarchical porous material-loaded cobalt-based catalyst. The method comprises the following steps: (1) evenly mixing a silicon source, an aluminum source, ethanol, NH3 and H2O at the ratio of 1 to (20-30) to (25-35) to (0.1-0.4) to (1-3), and adding a template agent at the mass ratio of the template agent to the aluminum source being (0.5-1) to 1; (2) putting the mixed liquid obtained from the step (1) into a crystallization kettle lined with polytetrafluoroethylene, filtering, washing, drying and removing the template agent through three-section temperature control roasting; (3) carrying out acid treatment on a carrier precursor to obtain a hierarchical porous carrier; and (4) dipping a saline solution dissolved with cobalt or a saline solution of cobalt and non-noble metal into the hierarchical porous material by adopting an equivalent-volume impregnation method for 10-48 hours, drying at 100-130 DEG C, and roasting at 300-600 DEG C for 4-10 hours, tabletting, and screening to prepare the hierarchical porous material-loaded cobalt-based catalyst.

The invention relates to a method of preparing porous phosphor absorbing ceramic particle from sludge in water supply plant. The preparation method comprises four phases: raw material preprocessing, balling, sintering, and cooling. The preparation method specifically comprises the following steps: picking raw material balls with a particle size of 6 to 8 mm, drying the raw material balls at a temperature of 105 DEG C for two hours, preheating the raw material balls at a temperature of 300 to 400 DEG C for 20 to 30 minutes, burning the raw material balls at a temperature of 1150 DEG C for 8 to 10 minutes, and cooling to obtain the finished product of ceramic particles. Through controlling the material ratio, rotation speed of granulator, the spraying mode of adhesive, burning time, and burning temperature, ceramic particles with a large specific surface area and strong phosphor absorbing performance can be obtained. The ceramic particles can be used as the filling material of a sewage processing system, and the sludge in a water supply plant is converted into valuable resource.

The invention belongs to the technical field of energy utilization and environment-friendly material manufacturing, and relates to a low-consumption continuous clean activated carbon production deviceand method. The low-consumption continuous clean activated carbon production device comprises a supply hopper, a double-sealed feeding device, a pyrolysis activation device, a discharging device anda detachable finished product bin, wherein blanking partition layers are arranged to divide the interior of the pyrolysis activation device into a drying region, a pyrolysis region, a surface activation region, a deep activation region and a solid product region; raw materials in the supply hopper are fed into the pyrolysis activation device by the double-sealed feeding device, and are subjected to drying and pyrolysis reaction first in a falling process of the raw materials to generate pyrolysis gas, tar and semi-coke; the tar is condensed in the device, is adsorbed on surfaces of the raw materials, and is collected after being completely cracked into small-molecule pyrolysis gas; the pyrolysis solid product semi-coke is fed into the surface activation region and the deep activation region; the activation gas is combined with the molten salt as an activator to activate the semi-coke and continuously enrich microporous and mesoporous structures of the semi-coke; and finally, the activated carbon with a relatively large specific surface area is generated and is collected after being discharged from the solid product region.

The invention discloses graphene/Ag-carbon microsphere aerogel coating and a preparation method and application thereof and belongs to the technical field of new coating materials. The preparation method includes: preparing Ag-carbon microspheres, mixing the Ag-carbon microspheres with a AgNO3 solution, and performing stirring, centrifugal separation, washing and ultrasonic dispersing to obtain even nano Ag-carbon microspheres; adding graphene oxide into the nano Ag-carbon microsphere solution, adding 5-10wt% of cysteine, and stirring to obtain a hydrogel mixture; placing the hydrogel mixturein hot oil of 75-85 DEG C for 8-10 hours, washing, using a freeze drying method to perform post-processing to obtain graphene/Ag-carbon microsphere aerogel, adding the graphene/Ag-carbon microsphere aerogel serving as the additive into coating to obtain the graphene/Ag-carbon microsphere aerogel coating. The graphene/Ag-carbon microsphere aerogel coating is ultrahigh in VOCs adsorption performanceand self-degradation ability and good in haze resistance and has potential application prospect.

The invention belongs to the technical field of carbon material adsorption and provides a preparation method of a nickel oxide loaded modified activated carbon fiber adsorbent. The method comprises the following steps: (1) pretreating activated carbon fibers; (2) dipping the activated carbon fibers; and (3) preparing the nickel oxide-loaded activated carbon fibers. The preparation method is simple, when the activated carbon fiber is impregnated, a mixture is subjected to ultrasonic oscillation, so that metal salt is fully loaded on surfaces of the activated carbon fibers, after modification, the hydrogen storage performance of the activated carbon fibers is improved by 28.4%, and a more effective treatment method and a more effective research direction are provided for adsorption separation and storage of hydrogen.

The invention discloses a method for preparing a carbon-based mineralized active fertilizer. The method includes the steps that forestry and agricultural residues and woody brown coal biomass serve as basic materials, the basic materials and a catalyst formed by mixing and blending powdered rock phosphate, pumice stones, serpentine, medical stone and bentonite are crushed respectively, mixed according to a certain proportion for pelleting and then placed into a carbonation reaction kettle for a reaction, output materials are cooled and then crushed again, wood vinegar, a biological agent and humic acid are added, stirred and mixed, and the carbon-based mineralized active fertilizer is obtained through pelleting. The carbon-based mineralized active fertilizer prepared through a simple and effective method is environmentally friendly, microcellular structures are increased by 20% and above compared with traditional charcoal, the fertilizer contains richer nitrogen, phosphorus, potassium and medium trace elements compared with the charcoal obtained just through biomass, the total quantity of nitrogen, phosphorus and potassium available to plants is increased by 15-30%, the total content of N-P-K is larger than or equal to 10% and above, the content of organic matter is larger than or equal to 36%, the fertilizer contains rich organic acid, the fertilizer consumption can be lowered, and fertilizer efficiency can be improved.

The invention provides a composite micro-electrolysis filler for treating the hardly degradable wastewater, and the filler is prepared from the following raw materials in parts by weight: 45 parts of iron powder, 15 parts of activated carbon powder, 8 parts of cerium powder, 8 parts of lanthanum powder, 15 parts of sodium bentonite, 10 parts of polyaluminium chloride, 10 parts of portland cement and 5 parts of cetyl trimethyl ammonium bromide. A preparation method comprises the following steps: weighing, uniformly mixing, adding water, extruding and forming, maintaining, modifying and the like, the micro-electrolysis filler is high in wastewater treatment efficiency, low in using cost, simple and convenient, and suitable for large-area popularization and application.